一、矿石性质易门老厂钴土矿属风化残留矿床,矿体赋存于白云岩风化层内。矿石中主要脉石矿物为石英及少量白云岩、方解石、云母、粘土等。脉石矿物量75～77%。矿石中金属矿物有针铁矿、赤铁矿、硬锰矿、软锰矿等,金属矿物量约23～25%。据有关研究单位认为,钴的赋存状态,可得出如下结论:(一)钴与90%铁无关,即样品中绝大 First, the nature of ore Yimen old plant cobalt ore is a weathered residue deposits, ore bodies occur in the dolostone weathering layer. The main gangue minerals in quartz ore and a small amount of dolomite, calcite, mica, clay and so on. Gangue minerals 75 to 77%. Ore metal minerals are goethite, hematite, hard manganese, soft manganese, etc., the amount of metal minerals about 23 ~ 25%. According to the relevant research institutes, the state of occurrence of cobalt can be concluded as follows: (1) Cobalt is irrelevant to 90% iron, that is,